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/* buffer.h
*
* Wiretap Library
* Copyright (c) 1998 by Gilbert Ramirez <gram@alumni.rice.edu>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef __W_BUFFER_H__
#define __W_BUFFER_H__
#include <glib.h>
#include "ws_symbol_export.h"
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#define SOME_FUNCTIONS_ARE_DEFINES
typedef struct Buffer {
guint8 *data;
gsize allocated;
gsize start;
gsize first_free;
} Buffer;
WS_DLL_PUBLIC
void ws_buffer_init(Buffer* buffer, gsize space);
WS_DLL_PUBLIC
void ws_buffer_free(Buffer* buffer);
WS_DLL_PUBLIC
void ws_buffer_assure_space(Buffer* buffer, gsize space);
WS_DLL_PUBLIC
void ws_buffer_append(Buffer* buffer, guint8 *from, gsize bytes);
WS_DLL_PUBLIC
void ws_buffer_remove_start(Buffer* buffer, gsize bytes);
WS_DLL_PUBLIC
void ws_buffer_cleanup(void);
#ifdef SOME_FUNCTIONS_ARE_DEFINES
# define ws_buffer_clean(buffer) ws_buffer_remove_start((buffer), ws_buffer_length(buffer))
# define ws_buffer_increase_length(buffer,bytes) (buffer)->first_free += (bytes)
# define ws_buffer_length(buffer) ((buffer)->first_free - (buffer)->start)
# define ws_buffer_start_ptr(buffer) ((buffer)->data + (buffer)->start)
# define ws_buffer_end_ptr(buffer) ((buffer)->data + (buffer)->first_free)
# define ws_buffer_append_buffer(buffer,src_buffer) ws_buffer_append((buffer), ws_buffer_start_ptr(src_buffer), ws_buffer_length(src_buffer))
#else
void ws_buffer_clean(Buffer* buffer);
void ws_buffer_increase_length(Buffer* buffer, unsigned int bytes);
unsigned gsize ws_buffer_length(Buffer* buffer);
guint8* ws_buffer_start_ptr(Buffer* buffer);
guint8* ws_buffer_end_ptr(Buffer* buffer);
void ws_buffer_append_buffer(Buffer* buffer, Buffer* src_buffer);
#endif
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif
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